at the top of this picture. Each board is two channels. An audio amplifier can boost the small incoming audio signal’s voltage by increasing its voltage, and current. The degree to which the amplifier ...

This circuit takes two separate line-level stereo (L & R) signals and combines them into one stereo (L & R) output, thus avoiding the need to switch between two pairs of input signals. In the author’s ...

Pro-Ject has announced the Pre Box S3, a pre-amplifier designed to serve as the central hub of a modern (and potentially compact) hi-fi system. The Austrian company, better known for its turntables, ...

A new two-channel analog front end promises to eliminate long-standing microphone and line-level trade-offs by capturing everything from whisper-quiet signals to hot studio outputs on a single chip.